| NO_x生成的有限反应速率二阶矩封闭模型 |
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| 引用本文： | 郭印诚,周力行,王希麟,林文漪.NO_x生成的有限反应速率二阶矩封闭模型[J].工程热物理学报,1998(3). |
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| 作者姓名： | 郭印诚 周力行 王希麟 林文漪 |
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| 作者单位： | 清华大学工程力学系!北京，100084，清华大学工程力学系!北京，100084，清华大学工程力学系!北京，100084，清华大学工程力学系!北京，100084 |
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| 基金项目： | 国家重大基础研究（攀登计划）项目 |
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| 摘 要： | 本文用有限反应速率二阶矩封闭模型对大速差射流燃烧室内煤粉燃烧过程中NO的生成进行了数值模拟，并将该模型的计算结果与Arrhenius模型的计算结果进行了比较，模拟结果表明，燃烧室中NO的生成是由燃料NO的生成机理来控制，Arrhenius模型计算得到的NO的浓度值高于有限反应速率二阶矩封闭模型的计算结果．
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| 关 键 词： | NO_x生成 二阶矩模型 煤粉燃烧 数值模拟 |
A SECOND-ORDER MOMENT TURBULENCE-CHEMISTRY MODEL FOR SIMULATING NO_x FORMATION |
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| GUO Yincheng, ZHOU Lixing,WANG Xilin, LIN Wenyi.A SECOND-ORDER MOMENT TURBULENCE-CHEMISTRY MODEL FOR SIMULATING NO_x FORMATION[J].Journal of Engineering Thermophysics,1998(3). |
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| Authors: | GUO Yincheng ZHOU Lixing WANG Xilin LIN Wenyi |
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| Abstract: | Thermal NO and fuel NO formation models with a second-order moment closure totreat the turbulence chemistry interaction are incorporated into the comprehensive modelfor simulating pulverized coal combustion. Simulation of three dimensional pulverized coalcombustion and NO formation has been made in a sudden-expansion combustor with highvelocity jets. The predicted results show that the values of thermal NO are smaller thanthat of fuel NO, the amounts of thermal NO produced is only about 2% of the total NO.Compared with the predicted results using the Arrhenius model, it can be seen that theNO concentration predicted by the Arrhenius model are larger than that predicted by thesecond-order moment turbulence chemistry model, so the turbulence effect is beneficial toreduce the NO forn1ation under the modeling condition in this combustor. |
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| Keywords: | NO_x formation second-order moment model pulverized coal combustion numerical modeling |
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